person-year

[ pur-suh n-yeer ]
/ ˈpɜr sənˌyɪər /

noun

a unit of measurement, especially in accountancy, based on an ideal amount of work done by one person in a year consisting of a standard number of person-days.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019